PCNE VPC Network Peering Practice Question
A company wants to connect two VPC networks using VPC Network Peering. What is required for this setup?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The VPCs must have non-overlapping IP ranges.
VPC Network Peering requires that the IP ranges of the peered networks do not overlap. Option C is correct. Option A is wrong because a Cloud VPN tunnel is not required for peering; peering is a direct connection. Option B is wrong because VPCs can be in different organizations and still be peered. Option D is wrong because VPCs can be in different regions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A Cloud VPN tunnel must be established.
Why it's wrong here
Incorrect. A Cloud VPN tunnel is a different technology used for connecting networks over the internet, not required for VPC Network Peering.
- ✗
Both VPCs must belong to the same organization.
Why it's wrong here
Incorrect. VPC Network Peering can be established between VPCs in the same organization or across different organizations, as long as the projects are in the same or different organizations.
- ✓
The VPCs must have non-overlapping IP ranges.
Why this is correct
Correct. The VPCs must have non-overlapping IP ranges to avoid routing conflicts and allow direct communication.
- ✗
Both VPCs must be in the same region.
Why it's wrong here
Incorrect. VPC Network Peering can be between VPCs in different regions. There is no region requirement.
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Same concept, more angles
1 more way this is tested on PCNE
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An engineer runs 'gcloud compute networks peerings list' and sees state 'INACTIVE' for a peering connection. Which is the most likely cause?
hard- ✓ A.The subnet CIDR ranges overlap.
- B.The IAM permissions for the peer are insufficient.
- C.The dynamic routing mode differs.
- D.The firewall rules are missing.
Why A: Overlapping subnet CIDRs cause the peering to be INACTIVE.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCNE exam.